mclntyre



Patented May 13, 1919.,

A. G. MCINTYRE.

APPLICATION FILED APR. 28, I9I6 RENEWED MAR. I2, I9I9.

SULFUR OXIDIZING PROCESS ND APPARAITUS THEREFOR.

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Patented 'May 13, 1919.`

A. G. MCINTYRE. i SULFUR OXI'DII-ZINGPRQ-CESS AND APPARATUS THEREFOR APPLICATION FILED ARR. 28, I-9I6.. RENEWED MAR. 12,1919.'

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' .sulfur burning chambers vso inclosing casing broken principally in section of Fig.' 1.

AINWELL GORDON MUINTYV'BE, OF TORONTO, CANADA.

SULFUR-OXIDIZING PROCESS AND APPARATUS THEREFOR.

Application filed April 28,

To all whom t may concern:

Be l it known that I, AINWELL GORDON MGINTYRE, a citizen of the Dominion of Canada, residin in Toronto, Canada, have invented certain new and useful Improvements in lrSulfur-Oxidizing Processes and Apparatus Therefor; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as-will enable others skilled .in the art to which it appertains to make anduse the same.

The present invention relates to an improved process of producing sulfur dioXid by burning sulfur in air in 4an apparatus of novel construction.

Briefly described, the apparatus of the invention comprises a series of communicating disposed vertically beneatha supply chamber. The outlet for the sulfur dioxid is in the bottom chamber so that the .burner is a down-draft one. construction takes advantage of the fact that sulfur dioxid is heavier than air and its course through Sublimation, which is one of the most common sources of trouble with types of burners i at present in use is also avoidedby this conlstruction. Sublimation is caused lby the presence of sulfur in a liquid condition which has not received enough air to properly oxidize it, due to the fact that the/furnace tempera- .ture is too low or the air and sulfur gas have insufficient time to thoroughly intermingle.

The details of construction of my'improved burner will appear from a description of a preferred embodimentpthereof.

In the drawings, Figure 1 is an elevation medial plane.

Fig. 2 is an end view, with a portion of the away to show the construction of the interior parts of the apparatus.

Figi. 3 is a Cross-section along the line 3--3 of Fig. l.

. Fig. 4 is a cross-section along the line 11--4 Referring to the drawings, in which similar reference characters denote similar parts a base of any convenient construction upon which are mounted rails 11 for supporting jthe burner. Between the rails and the burner are a series of rollers 12. .This construction aids in level- "Specification of Letters Patent.

This I the series of chambers is that y.which .the gas' of itself would take.

along a longitudinal iatented May 13, 1919.

1916, Serial No. 94,130. Renewed March 12, 1919. Serial No. 282,195.

ing the burner as well as allows for eXpansion of the burner when heated.

The burner itself is In de up of a plurality of shelves 13 maintained in spaced relation- Ship by a series of channel plates 14 which form the sides of the burner as shown most clearly in Fig. 3. The ends of the shelves are bent at right angles as-at 15 to form a means of attachment for the end plates 16. The top of the burner is formed by a cover plate 17 set upon the upper channel plates 14 and havingits ends turned upwardly atv 18- for attachment to the end plates 16. 4

The cover plate 17 is provided with aperi tures adapted to be closed by doors 19 which when open boss 21 on the cover plate is screwed the stem 22 of a valve 23 which controls the size of an opening inthe uppermost one 'of the shelves 13.

The construction above described forms a supply chamber A, and a series of combustion chambers B, C and D of which three are shown in the embodiment illustrated herein (although it will be understood that any fother suitable number may be used).

Each of the shelves 13 except the upper one which forms the base of the'supply chamber and the bottoni one which forms the base of chamber D and rests upon the rollers 12 is provided with a circular opening 24. having at its upper edge a raised rim 25, the purpose of which is to retain a certain depth of melted sulfur upon each shelf. As shown in Fig.l 1 the openings 24 are disposed at opposite ends of adjacent chambers, thereby providing Jfor a circulation of air throughout the entire length of each chamber.

Attached to the side walls of in any convenient manner are two outlet pipes 26 (Fig. 3) adapted to be connected to any suitable apparatus (not shown) for withdrawing the sulfur dioxid from the burner. These outlet pipes are placed at the end of chamber D opposite to that at which is located the opening into chamber C, so that the products of combustion must pass throughout the length of chamber D before being withdrawn.

The end plates 16 are provided with series of apertures 27 forming openings into the ends of chambers B, C and D slightly above the bases thereof. These openings are governed by hinged swung to Jany position chamber DA doorsf28 that can be rest against stops 20. Through a los `.'.,jacket 40. adjacent the twov side walls of theI burner l, Of' these doors the or bar' which mby be inserted in the holes in the handle portions 29 of the doors. 'The doors can be held in any Aposition of adjusti ment by means of pins 30 placed in'adjust-fing holes 31 formed in the side portions of When the 'doors are closed they rest against the bottom portions 33 of the frames; Inorder to observe the color of the flame within theburner without' raising the doors more than is necessary for theentrance,i of

aireach door is provided with observation holest covered by revoluble damper doors.

The ends and sideso the burner de scribed above are surrounded by a metallic Near the top offthisjjacket and aresliding 'da1npers.`at1` of 'which` one'fis shownin detail in`ll`ig. 4. Through these dampers the air supply `for the burner Vis drawnin. While the dempers maybe located at the ends of jacket 40 the arrangement above described is preferable, as it A causes, the air drawn through thedampers 25 to pass along the walls of the burnerLthereby heating vthe air. In order toobtain access to the burner the jacket 40 is proif'ided at each end with doors 42 hinged at tothe thereof will be brieliiy described; 'd i Thel supply chamber A is iilled Withfany` desired amount' of lsulfur-."3` A little sulfur is Valve 23 is ythen raised to allowthe melted sulfur toy pass' into chamber In this chamber the sulfur willdrain over the rim 25 into the next chamberand some of it will finally reach the bottom of the burner.`

There will then befin `chambers B 'and G, melted sulfurof a depth determined by the height ofthe rim 25 andin chamber Dany The'iair enters through the dampers 41 which in fgeneral` excess sulfur will collect.

burner to coolv gradua The doors 28 at the end of eachbhamber are raised the proper distance toipermit a certain amount of air to enter the interior By' altering the position" air' supply can be regu-v lated to an' amount just sufiicient to cause complete oxidation of sulfur in the chambers. Vhile the furnace is'in operation thel of the chambers.

doors 42 are closed, as` well as supply doors 19 at the ytop of the burner. Hence all of the air drawn through the burner mustcome in through dampers 41. V f In general doors 28 should be opened `to more air Should be added," comes white,hk some of the'airl must be shut the frames 32 surrounding the yapertures'QK- f. j .i discharge apparatus.

Having shown the construction of one ernl bcdnnent `of the inventionl the operation paratively small` burner,

thrown into chamber B and ignited in order' tto melt the sulfur in the supply chamber.l y

` sulfur may in orderto let the air enter at letin enough'air'to causejthe sulfur flamesneai" theou'tlet of the gspipes 26, to be-of a light blue color. If the flame becomes dark,

while if it beoii.- In "anyefent, theair 'supply should be regulated by doors 28 and not by the slidingdampers 41 of the air jacket.`

The draft iin-the burnerY ispaused by the vusual method of a blower or vacuum pump connected to the discharge `pipes 2G. .On account ofapertures 1241s being disposed at alternate endsof the' series vof combustion chambers', slomeuo the will Abedramn throughoutthe entire length'oi"L each chambar, and downward from4 onerkchamber to t e next, thus following thev samecourse` as does themelted` sulijur in its passage through the burnerand descending in the.

natural direction' dueto. sulfurl dioxid being' heavier than air. l As has been previously explained, it `isffo `nd that .this down draft mode; of operation. lisl .the 'most satisfactory way *in` which toproperly oxidize the sailfur.l

- gas without .causingX sublimation which-'Qin other :devices of this oharac'teris lasource ofA continual trouble? since the sulfur particles in the-gas Clog-ihre pipegfofihe.. eine and.

The Generation; described triennal-tten herein is one inav'hichfthe purest andrichest` sulfur dioXid gas 'may ,be formed 1n a com'- permits the burning of a of sulfur;` To accomplish this result, a sulwhich however, maX'imum amount 1 fur melting 'compartment lc'oextensive with tl1e"full length andwidth of the lnirner is provided. In this compartment the (sulfur will be thoroughly dried and melted bythe internal heat of the burner andthe melted bei conveniently fed into the oxidizing.4 .ha`mb ers k'cui fthe burner reiquired. if" f' l.' A

Various modifications or changes in the details ofmy invention'maybemade with` out departing from the .principlethereoi Having described vmy inventiom' what Iv` claim -asnew and desire to .secure by Letters Patent is as follows-z 5' 1.-A` sulfur burner, comprising` in combination, asupply chamber, a plurality of combustion l chambers below said supply chamber, supply. controlling means .between saidy supply 1chamber and the uppe'fv one of said combustion chambers, openings between adjacent combustion chambers, means for admitting air to said combustion chambers and means associated with the bottom one of said combustion chambers foi-withdrawing the products 'of-combustion.

2. Al sulfur burner, comprising in combination a supply chamber, doors at `the top of said chamber,

a plurality `of'combustion i chambers belowy said supply chamber, a'valve between saidvsupply chamber and theupper llik vco

:recesso apertures Vbetween and disposed at alternate` ends of adjacent combustion chambers, a rim surrounding the. uppe end of each opening, air supply apertures in the walls oi said combustion chambers and means associated with the bottoni one of said coin- -bustion chambers4 for withdrawing the products ot' combustion.

4f. A sulfur burner, comprising in come bination, a series ofsuper-imposcd coinbustion chambers, a supply chamber above and (io-extensive withthe horizontal dimensions of theupper one of said combustion chambers, a valve between said supply"chamber and the upper combustion chamber, apertures between the other combustion chambers ofsaid series, means ior admittingl air to each of said combustion chambers and means associated with the bottoni one of said combustion chambers for withdrawing the products of coinbustion.

A sulfur burner, t-omiu'ising in com bination, a. supply chamber, a plurality of combus ion chambers below said supply chamber, supply controllimgr means between said supply chamber and the upper one of said combustion chambers, openings be-V tween adjacent combustion chambers,'means for admitting air to said combustion charn-k bers, an outlet for the products of combustion connected to thebottom one of said combustion chambers, a achet surrounding the walls of said chambers and apertures in the walls of said jacket.

(i. A sulfur burner, comprising in combination, a. casing formed with a supply chamber and' a plurality of combustion chambers below said supply chamber, supply controlling means between said supply chamber and the upper one of said combustion chambers, openings between the adjacent combustion chambers, means permitting access to the interior of said combustion chambers, means for withdrawing the products of combustion connectedwopthe bottom one of said combustion chamberspa jacket surrounding said casing, adjustableapertures adjacent the top or' said jacket and doors in the walls of said g'aeliet adjacent the means for permitting access to the in ter-ier of said combustion chambers,l

7. A sulfur burner, comprisin f in cem bination a base, a plurality of rai s on saisi base, rollers upon said, rails, a easing mounted upon said. rollers and formed with, a plurality of' combustion chambers and s supply chamber above the combustion chamk ber, awnlyeibetween said supply chamber and the upper one of said combustion chamm bers, openings between adjacent combustion chambers, means for admitting' ail` to se' combustion chambers and means associated ,i 'ith the bottom one of said combustion chambers for withdrawing the products or combustion.

8. A sulfur burner, comprising in' coa hination, a series of combustion chamba-: having; an outlet opening at `the bottom thereof, and comprising a plurality of shelves positioned one above the other in spaced relation, said shelves having apertures therethrough and rims about the up per edges oi' said apertures, inlet openings for the spaces between the shelves, means for controlling, the extent of the openings, a supply above saidl combustion chamber chambers and supply controlling means between said supply chamber and'one of said combustion chambers 9. The hereiirdeseribed proc/ess of producing sulfur dioxid, which consists in melt- Vine" ,sulfur in a. supply chamber, distributing -f said sulfur throughout a srries of combustion chambers beneath said supply' chamber, admitting air to each ofsaid combustion chainbcrs, maintaining; a downward circulation of air throughout said combustion chambers and withdrawing the sulfur dioxid from the bottoni one of said combustion chambers.

10, The herein-described process of procombustion chamber to the next, and with drawing sulfur dioxid from the lowest one of said combustion chambers.

ln testimony whereof l a-ix my signature. 

